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https://www.readbyqxmd.com/read/29783068/reliability-of-the-star-excursion-balance-test-and-two-new-similar-protocols-to-measure-trunk-postural-control
#1
Diego López-Plaza, Casto Juan-Recio, David Barbado, Iñaki Ruiz-Pérez, Francisco J Vera-Garcia
BACKGROUND: Although the Star Excursion Balance test (SEBT) has shown a good intra-session reliability the inter-session reliability of this test has not been deeply studied. Furthermore, there is an evident high influence of the lower-limbs in the performance of the SEBT so even if it has been used to measure core stability it is possibly not the most suitable measurement. OBJECTIVE: The aims of this study were: i) to assess the absolute and relative between-session reliability of the SEBT and two novel variations of this test to assess trunk postural control while sitting, i...
May 18, 2018: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/29782218/postural-control-and-physiological-responses-to-a-simulated-match-in-u-20-judo-competitors
#2
Luis Santos, Javier Fernández-Río, Eliseo Iglesias-Soler, Miguel Blanco-Traba, Markus Due Jakobsen, Vicente González-Díez, Emerson Franchini, Carlos Gutiérrez, Xurxo Dopico-Calvo, Eduardo Carballeira-Fernández, William Amonette, Oscar Suman
The aim was to evaluate the effects of judo combat on the athletes' postural control (PC) and physiological loading before, during and after a simulated match. Seventeen under-20 regional and national level athletes completed one modified 7-min match. At baseline, during the combat (3rd and 7th minutes) and 2-min post-match centre of pressure (CoP) parameters were assessed. Heart rate (HR), blood lactate (BLa) and rating of perceived exertion (RPE) and local RPE (LRPE) were collected. Significant increments were observed in CoP mean positioning and velocity at 3rd and 7th minutes, but the CoP deviation in both axes was unaffected...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29782181/effectiveness-of-an-osteopathic-abdominal-manual-intervention-in-pain-thresholds-lumbopelvic-mobility-and-posture-in-women-with-chronic-functional-constipation
#3
María José Martínez-Ochoa, Juan Carlos Fernández-Domínguez, Jose Miguel Morales-Asencio, Javier González-Iglesias, François Ricard, Ángel Oliva-Pascual-Vaca
OBJECTIVES: To assess the effect of an osteopathic abdominal manual intervention (AMI) on pressure pain thresholds (PPTs), mobility, hip flexibility, and posture in women with chronic functional constipation. DESIGN: Randomized, double-blind placebo-controlled trial. SETTING/LOCATION: Subjects were recruited for the study by referral from different gastroenterology outpatient clinics in the city of Madrid (Spain). SUBJECTS: Sixty-two patients suffering from chronic functional constipation according to the guidelines of the Congress of Rome III...
May 21, 2018: Journal of Alternative and Complementary Medicine: Research on Paradigm, Practice, and Policy
https://www.readbyqxmd.com/read/29781982/the-motor-in-implicit-motor-sequence-learning-a-foot-stepping-serial-reaction-time-task
#4
Yue Du, Jane E Clark
This protocol describes a modified serial reaction time (SRT) task used to study implicit motor sequence learning. Unlike the classic SRT task that involves finger-pressing movements while sitting, the modified SRT task requires participants to step with both feet while maintaining a standing posture. This stepping task necessitates whole body actions that impose postural challenges. The foot-stepping task complements the classic SRT task in several ways. The foot-stepping SRT task is a better proxy for the daily activities that require ongoing postural control, and thus may help us better understand sequence learning in real-life situations...
May 3, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29781935/balance-training-reduces-postural-sway-and-improves-sport-specific-performance-in-visually-impaired-cross-country-skiers
#5
Alexander Kurz, Benedikt Lauber, Steffen Franke, Christian Leukel
Kurz, A, Lauber, B, Franke, S, and Leukel, C. Balance training reduces postural sway and improves sport-specific performance in visually impaired cross-country skiers. J Strength Cond Res XX(X): 000-000, 2018-Balance training is highly effective in reducing sport injuries and causes improvements in postural stability and rapid force production. So far, the positive effects of balance training have been described for healthy athletes. In the present experiments, we questioned whether athletes with disabilities of the visual system can also benefit from balance training...
May 17, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29781817/intravenous-immunoglobulin-therapy-in-refractory-autoimmune-dysautonomias-a-retrospective-analysis-of-38-patients
#6
Jill R Schofield, Kamal R Chemali
BACKGROUND: Intravenous immunoglobulin (IVIG) has recognized efficacy in autoimmune peripheral nerve disorders, but there has been limited study of the use of IVIG in autoimmune dysautonomias. STUDY QUESTION: To determine the efficacy and safety of IVIG in patients with disabling, refractory autoimmune dysautonomias, including patients with postural tachycardia syndrome and gastrointestinal dysmotility. STUDY DESIGN: Patients with one or more autonomic disorder(s) and persistent serological evidence for autoimmunity who were unable to work or attend school despite usual treatments for dysautonomia were treated with IVIG for at least 3 months at a dose of at least 1 gm/kg monthly...
May 14, 2018: American Journal of Therapeutics
https://www.readbyqxmd.com/read/29781789/the-influence-of-wearing-ski-boots-with-different-rigidity-characteristics-on-postural-control
#7
Frédéric Noé, Xavier García-Massó, Pauline Delaygue, Audrey Melon, Thierry Paillard
External supports that reduce ankle joint mobility such as ski-boots can impair postural control of healthy participants. Although this disruptive effect has been attributed to the rigidity of the external supports, the results remained controversial and no study has been conducted in order to evaluate the influence of ski-boots rigidity. Hence, the question about the influence of ankle support rigidity on postural control remains open. This study was therefore undertaken in order to investigate the effect of ski-boots rigidity on postural control...
May 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29781783/clinical-and-radiological-outcome-of-non-surgical-management-of-thoracic-and-lumbar-spinal-fracture-dislocations-a-historical-analysis-in-the-era-of-modern-spinal-surgery
#8
Andrei Fernandes Joaquim, Gregory D Schroeder, Alpesh A Patel, Alexander R Vaccaro
CONTEXT: It is well established that traumatic spinal dislocations (AO Type C injuries) should be surgically treated. However, no recent comparative study of surgical versus non-surgical management of type C injuries was found attesting the superiority of surgical treatment. OBJECTIVE: Due to the lack of information about the natural history of non-surgical management of type C injuries, we evaluated the outcome of historical conservative treatment of type C injuries...
May 21, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29781516/cardiac-autonomic-modulation-and-long-term-use-of-amiodarone-in-patients-with-chronic-chagasic-cardiopathy
#9
Henriette Elana Fortes Silva, Renan Sandoval de Almeida, Danilo Batista Silveira, Maurício Llaguno, Luiz Antônio Pertili Rodrigues Resende, Valdo José Dias da Silva, Dalmo Correia
BACKGROUND: Patients with chronic Chagas cardiopathy (CCC), which may be associated with cardiac arrhythmias, frequently use amiodarone, an anti-arrhythmic drug that, experimentally, appears to modulate the cardiac autonomic function. OBJECTIVE: The present cross-sectional observational study aimed to evaluate autonomic cardiac modulation in patients with CCC undergoing chronic amiodarone therapy. METHODS: Three groups were investigated: Group 1 included patients with CCC not treated with amiodarone (n = 27); Group 2 included patients with CCC with prolonged use (at least 6 months) of amiodarone (n = 16); and Group 3 including non-chagasic control patients (n = 23)...
May 21, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29780319/day-to-day-variability-of-postural-sway-and-its-association-with-cognitive-function-in-older-adults-a-pilot-study
#10
Julia M Leach, Martina Mancini, Jeffrey A Kaye, Tamara L Hayes, Fay B Horak
Introduction : Increased variability in motor function has been observed during the initial stages of cognitive decline. However, the natural variability of postural control, as well as its association with cognitive status and decline, remains unknown. The objective of this pilot study was to characterize the day-to-day variability in postural sway in non-demented older adults. We hypothesized that older adults with a lower cognitive status would have higher day-to-day variability in postural sway. Materials and Methods : A Nintendo Wii balance board (WBB) was used to quantify postural sway in the home twice daily for 30 days in 20 non-demented, community-dwelling older adults: once under a single-task condition and once under a dual-task condition (using a daily word search task administered via a Nook tablet)...
2018: Frontiers in Aging Neuroscience
https://www.readbyqxmd.com/read/29780311/characteristics-of-rest-and-postural-tremors-in-parkinson-s-disease-an-analysis-of-motor-unit-firing-synchrony-and-patterns
#11
Orsalia M Agapaki, Constantinos N Christakos, Dimitrios Anastasopoulos
The neural mechanisms responsible for resting and postural tremor in Parkinson's disease (PD) have been the object of considerable study, much of it focusing on supraspinal sites. Here, we adopted an alternative approach that emphasizes motor unit (MU) firing synchrony and patterns of discharge. To explore if these could account for known features of PD tremor, we recorded the instantaneous acceleration of the upper limb of 23 PD patients at rest or while they tried to hold a stable posture together with surface EMG and single MU discharges of upper limb muscles...
2018: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/29779829/leveling-the-playing-field-evaluation-of-a-portable-instrument-for-quantifying-balance-performance
#12
Sutton B Richmond, Kevin D Dames, Daniel J Goble, Brett W Fling
Balance is a complex, sensorimotor task requiring an individual to maintain the center of gravity within the base of support. Quantifying balance in a reliable and valid manner is essential to evaluating disease progression, aging complications, and injuries in clinical and research settings. Typically, researchers use force plates to track motion of the center of gravity during a variety of tasks. However, limiting factors such as cost, portability, and availability have hindered postural stability evaluation in these settings...
May 17, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29779681/serum-uric-acid-level-and-its-association-with-motor-subtypes-and-non-motor-symptoms-in-early-parkinson-s-disease-pals-study
#13
Xinxin Huang, Samuel Yong-Ern Ng, Nicole Shuang-Yu Chia, Sanchalika Acharyya, Fiona Setiawan, Z-H Lu, Ebonne Ng, Kay-Yaw Tay, Wing-Lok Au, Eng-King Tan, Louis Chew-Seng Tan
OBJECTIVE: Uric acid has been found to be potentially neuroprotective in Parkinson's disease (PD). We investigated the relationship between serum uric acid levels and both motor and non-motor features in a prospective early PD cohort study. METHODS: Fasting serum uric acid levels were measured from 125 early PD patients. Demographic, clinical characteristics, motor and non-motor assessments were performed. Patients were categorized into three motor subtypes: tremor-dominant (TD), postural instability/gait difficulty (PIGD), and mixed...
May 17, 2018: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/29779092/neurodynamic-evaluation-and-nerve-conduction-studies-in-patients-with-forward-head-posture
#14
Tugba Ozudogru Celik, Burcu Duyur Cakit, Baris Nacir, Hakan Genc, Mehmet Onat Cakit, Aynur Karagoz
Forward head posture (FHP) is one of the most frequently seen problems. The aim of this study was to evaluate the neurodynamic tests and peripheral nerve conductions of upper extremity in patients with FHP. The study population included 100 patients with upper extremity and neck problems and 34 healthy individuals as a control group. Craniovertebral angle measurement was used to determine forward head posture. Stretch tests for radial, ulnar and median nerves were performed. Nerve conductions of bilateral median, radial, ulnar and medial antebrachial cutaneous (MAC) nerves were examined in all patients included in the study...
May 19, 2018: Acta Neurologica Belgica
https://www.readbyqxmd.com/read/29778979/exploring-the-relationship-between-stability-and-variability-of-the-centre-of-mass-and-centre-of-pressure
#15
Roshanth Rajachandrakumar, Jotvarinder Mann, Alison Schinkel-Ivy, Avril Mansfield
BACKGROUND: There are competing perspectives in the literature regarding the role of movement variability in quiet standing and balance control. Some view high variability as indicative of poor balance control and a contributor to increased fall risk, whereas others view variability as beneficial in providing sensory information that aids balance control. RESEARCH QUESTION: This study aimed to help to clarify the role of variability in balance control by testing two competing hypotheses: that increased variability would lead to instability, or that increased variability would improve stability, where stability is defined as the ability to respond to a perturbation...
May 9, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29778898/examining-the-diagnostic-accuracy-of-static-postural-stability-measures-in-differentiating-among-knee-osteoarthritis-patients-with-mild-and-moderate-to-severe-radiographic-signs
#16
Nahid Pirayeh, Mohammad-Jafar Shaterzadeh-Yazdi, Hossein Negahban, Mohammad Mehravar, Neda Mostafaee, Amal Saki-Malehi
BACKGROUND: Clinicians need a reliable and accurate tools that can best identify and classify balance impairments between mild and moderate to severe grades of knee osteoarthritis (OA). RESEARCH QUESTION: This study was designed to investigate the accuracy of postural measurements to discriminate between these two groups of knee OA. METHODS: A total of 130 patients with knee OA based on the Kellgren-Lawrence (KL) grading scale were categorized into 65 patients with mild (a KL grade≤ 2) and 65 patient with moderate to severe (a KL grade≥3) radiographic sign...
May 12, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29778304/postural-orthostatic-tachycardia-syndrome-in-children-and-adolescents
#17
REVIEW
Jeffrey R Boris
Postural orthostatic tachycardia syndrome (POTS) affects up to 3,000,000 people in the United States, with at least one-third of them developing POTS before the age of 18. POTS as a disorder is similar in adult and pediatric populations, but there are factors specific to pediatric patients that affect how it presents and how it is experienced that make pediatric POTS different. This review discusses the both the similarities in this population to their adult counterparts and the unique challenges faced by pediatric POTS patients, including management of schooling and education as well as the complex interactions between these pediatric patients and their parents...
May 12, 2018: Autonomic Neuroscience: Basic & Clinical
https://www.readbyqxmd.com/read/29777980/trunk-postural-adjustments-medium-term-reliability-and-correlation-with-changes-of-clinical-outcomes-following-an-8-week-lumbar-stabilization-exercise-program
#18
Jean-Alexandre Boucher, Richard Preuss, Sharon M Henry, Marilee Nugent, Christian Larivière
BACKGROUND: Low back pain (LBP) has been previously associated with delayed anticipatory postural adjustments (APAs) determined by trunk muscle activation. Lumbar stabilization exercise programs (LSEP) for patients with LBP may restore the trunk neuromuscular control of the lumbar spine, and normalize APAs. This exploratory study aimed at testing the reliability of EMG and kinematics-based postural adjustment measures over an 8-week interval, assessing their sensitivity to LBP status and treatment and examining their relationship with clinical outcomes...
April 22, 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29777772/improving-maraviroc-oral-bioavailability-by-formation-of-solid-drug-nanoparticles
#19
Alison C Savage, Lee M Tatham, Marco Siccardi, Trevor Scott, Manoli Vourvahis, Andrew Clark, Steve P Rannard, Andrew Owen
Oral drug administration remains the preferred approach for treatment of HIV in most patients. Maraviroc (MVC) is the first in class co-receptor antagonist, which blocks HIV entry into host cells. MVC has an oral bioavailability of approximately 33%, which is limited by poor permeability as well as affinity for CYP3A and several drug transporters. While once-daily doses are now the favoured option for HIV therapy, dose-limiting postural hypotension has been of theoretical concern when administering doses high enough to achieve this for MVC (particularly during coadministration of enzyme inhibitors)...
May 16, 2018: European Journal of Pharmaceutics and Biopharmaceutics
https://www.readbyqxmd.com/read/29777505/a-fingertip-force-prediction-model-for-grasp-patterns-characterised-from-the-chaotic-behaviour-of-eeg
#20
Rinku Roy, Debdeep Sikdar, Manjunatha Mahadevappa, C S Kumar
A stable grasp is attained through appropriate hand preshaping and precise fingertip forces. Here, we have proposed a method to decode grasp patterns from motor imagery and subsequent fingertip force estimation model with a slippage avoidance strategy. We have developed a feature-based classification of electroencephalography (EEG) associated with imagination of the grasping postures. Chaotic behaviour of EEG for different grasping patterns has been utilised to capture the dynamics of associated motor activities...
May 19, 2018: Medical & Biological Engineering & Computing
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